Heaths Flooded Tube Vertical

The other thing I was thinking is this... the collars are half way up the tube. The net pots bases are I guess about half way down the tube. This is critical initially to stop any dry zones between the plant and the root entrails. I guess he gets air in the zone within the net pot and when root growth builds many will lay on the top of the flow of water.

What I'm saying is I am sure that oxygen uptake could be greatly improved and if this is the case bear in mind the prolific yields he's getting from minimal watts, the sky is the limit!

Originally Posted by forestboy

Absolutely it is! But if memory serves me well the optimal temp for plant health and max dissolved oxygen is 21 degrees. Also dissolved oxygen at this temp within water is only 2% of that which roots would be getting from the air in even a soil medium so I fail to understand how this guy is getting such good results. I don't doubt him at all but it's baffling! Defies conventional knowledge, there shouldn't be sufficient oxygen!

He states that the speed in which the water travels is how the plants are receiving sufficient oxygen and I guess this must be it i.e molecules of o2 are passing dissolved within the water at such a rate that the roots can perpetually replenish themselves from the the fast flow. This has to be the reason but I still don't fully understand cos the roots will still only be able to access a max of 2% of their requirements at any one moment!?!?!?!?

I am not 100% sure, but if what you are saying is right, and water holds that 2%, the fact that is flowing, that have a new 2% within seconds. So all those 2%'s are adding up to what the plant needs. I might be wrong but that is how it works in my head =) Like how you need to circulate air in your grow room for new CO2.

the waterfall in the res creates the DO about 8 -10% anything over 15% is toxic then it is pumped round the sytem at high speed, roots thrive in it, and as for yield its because he has crammed a zillion plants round the bulb no light wasted at all, very efficiant way of growing, and obv diallage and the fact hes a wizzard plays a part lol

Originally Posted by sqydro

the waterfall in the res creates the DO about 8 -10% anything over 15% is toxic then it is pumped round the sytem at high speed, roots thrive in it, and as for yield its because he has crammed a zillion plants round the bulb no light wasted at all, very efficiant way of growing, and obv diallage and the fact hes a wizzard plays a part lol

Ohhh i didnt know more than 15% was toxic. How does that work? I mean, what about bubbleponics/DWC with a mass of air rocks? I heard you cant get too much oxygen in your water.

air stones do not add DO the best micropore air stones will create the same as a waterfall in ur res, its the aggitation of the water that gets the DO in there, ga exchange takes place at the surface as its broken, fluming and waterfall better ways of running DWC ive done both and stonless wins hands down for me, horses for courses though

so are the gray dams inside the pipe home made? assume so ..plastic? they are glued? silicon ? to the inside wall? are they even necessary?

yes for this style with the veg and dwc the collars keep the level touching the net pot bottom with out them its just nft basicly

This guy is a straight pro. I've seen his other grows, top tier ..